/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.engine.impl.persistence.entity;

import org.activiti.engine.delegate.event.ActivitiEventType;
import org.activiti.engine.delegate.event.impl.ActivitiEventBuilder;
import org.activiti.engine.identity.Group;
import org.activiti.engine.identity.GroupQuery;
import org.activiti.engine.impl.GroupQueryImpl;
import org.activiti.engine.impl.Page;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.db.DbSqlSession;
import org.activiti.engine.impl.db.PersistentObject;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.AbstractManager;

import java.util.List;
import java.util.Map;


/**
 * @author Tom Baeyens
 * @author Saeid Mirzaei
 * @author Joram Barrez
 */
public class GroupEntityManager extends AbstractManager implements GroupIdentityManager {

    public Group createNewGroup(String groupId) {
        return new GroupEntity(groupId);
    }

    public void insertGroup(Group group) {
        getDbSqlSession().insert((PersistentObject) group);

        if (getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
            getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
                    ActivitiEventBuilder.createEntityEvent(ActivitiEventType.ENTITY_CREATED, group));
            getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
                    ActivitiEventBuilder.createEntityEvent(ActivitiEventType.ENTITY_INITIALIZED, group));
        }
    }

    public void updateGroup(Group updatedGroup) {
        CommandContext commandContext = Context.getCommandContext();
        DbSqlSession dbSqlSession = commandContext.getDbSqlSession();
        dbSqlSession.update((GroupEntity) updatedGroup);

        if (getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
            getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
                    ActivitiEventBuilder.createEntityEvent(ActivitiEventType.ENTITY_UPDATED, updatedGroup));
        }
    }

    public void deleteGroup(String groupId) {
        GroupEntity group = getDbSqlSession().selectById(GroupEntity.class, groupId);

        if (group != null) {
            if (getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
                getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
                        ActivitiEventBuilder.createMembershipEvent(ActivitiEventType.MEMBERSHIPS_DELETED, groupId, null));
            }

            getDbSqlSession().delete("deleteMembershipsByGroupId", groupId);
            getDbSqlSession().delete(group);

            if (getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
                getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
                        ActivitiEventBuilder.createEntityEvent(ActivitiEventType.ENTITY_DELETED, group));
            }
        }
    }

    public GroupQuery createNewGroupQuery() {
        return new GroupQueryImpl(Context.getProcessEngineConfiguration().getCommandExecutor());
    }

    @SuppressWarnings("unchecked")
    public List<Group> findGroupByQueryCriteria(GroupQueryImpl query, Page page) {
        return getDbSqlSession().selectList("selectGroupByQueryCriteria", query, page);
    }

    public long findGroupCountByQueryCriteria(GroupQueryImpl query) {
        return (Long) getDbSqlSession().selectOne("selectGroupCountByQueryCriteria", query);
    }

    @SuppressWarnings("unchecked")
    public List<Group> findGroupsByUser(String userId) {
        return getDbSqlSession().selectList("selectGroupsByUserId", userId);
    }

    @SuppressWarnings("unchecked")
    public List<Group> findGroupsByNativeQuery(Map<String, Object> parameterMap, int firstResult, int maxResults) {
        return getDbSqlSession().selectListWithRawParameter("selectGroupByNativeQuery", parameterMap, firstResult, maxResults);
    }

    public long findGroupCountByNativeQuery(Map<String, Object> parameterMap) {
        return (Long) getDbSqlSession().selectOne("selectGroupCountByNativeQuery", parameterMap);
    }

    @Override
    public boolean isNewGroup(Group group) {
        return ((GroupEntity) group).getRevision() == 0;
    }

}
